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What is the typical fuel consumption per 100 kilometers on highways?

2 Answers

StCora

09/01/25 5:22am

For most sedan models driving on highways at a speed of 100 kilometers per hour, the fuel consumption per 100 kilometers is approximately 6-10 liters. Here are some related details: Engine: The most fuel-efficient operating condition for an engine is under medium-to-high load. Both near-minimum load and near-maximum load conditions consume more fuel. Therefore, a moderate speed can provide the engine with a relatively high output-balanced resistance, keeping the engine operating in a relatively efficient range while the resistance itself isn't too great to consume excessive energy. This "balanced trade-off" represents the vehicle's economic speed.

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SanJude

09/13/25 8:04am

When I drive a sedan on the highway, the fuel consumption is usually around 6-8 liters. Last time I drove a 1.5L displacement car with the air conditioning on and two passengers, the displayed fuel consumption was only 6.3 liters per 100 kilometers. However, if I drive a 2.0T turbocharged SUV, the fuel consumption jumps to 8-10 liters. Speed has a significant impact; I've noticed that cruising at 120 km/h burns nearly 2 liters more fuel than at 100 km/h. Carrying heavy luggage or having insufficient tire pressure can also stealthily increase fuel consumption. I recommend checking the tires before long trips and maintaining an economical speed of 90-100 km/h for the best fuel efficiency.

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